Now here's where it gets interesting. The size of the cookie matters - big surprise! The last few batches yielded <30 cookies and baking time was approaching 20 minutes. This time, I was closer to the 1" ball size and the yield was ~3 dozen (37 to be exact). Baking time was 15 minutes - and *perhaps* could have gone a bit longer - but not much.

Stick with aluminum 1/4 sheet pans - you can get about 14 cookies on them. One sheet at a time, middle rack - oven temp 350 degF.